Double action valve pump



- h l 1934- R. E. VENTRESS El AL 1,952,640

DOUBLE ACTION VALVE PUMP Filed Sept. 26, 1932 3 Sheets- Sheet 1 In ven [or WE AVMZ XeSQS flllorney March 27, 1934. R. E. VENTRESS ET AL 1,952,640

DOUBLE ACTION VALVE PUMP Filed Sept. 26, 1932 3 Sheets- Sheet 2 Venz ress J WW/21a TZZ flltorney March 27, 1934.

R. E. VENTRESS El AL 1,952,540

DOUBLE ACTION VALVE PUMP Filed Sept. 26, 1932 3 Sheets- Sheet 3 Patented Mar. 27, 1934 PATENT OFFICE DOUBLE ACTION VALVE PUMP Robert E. Ventress and Joseph 0. Mulvill, Alton, Ill.

Application September 26, 1932, Serial No. 634,953

2 Claims.

This invention relates to pumps. Itis the aim of this invention to provide a pump with double action; that will draw water a long distance and discharge it under high pressure; that will have all working parts formed of non-corrosive metals like brass; that can be used for hand power or may be coupled to internal combustion engines, steam engines, windmills, or electric motors as a source of power; that will test boilers two hundred pound cold water pressure under hand power; that contains four valves whichcounteraot each other under high pressure; that will play two streams of water on a fire at one time; and that will be found useful for pumping water wherever it is desirable to supply water at increased pressures. Further objects of the invention are to provide a pump of the character referred to that is compact and durable, that is extremely economical to operate; that is simple in its details of construction; that is easily assembled and torn apart for repair purposes; and otherwise well adapted for its intended purpose.

With the foregoing and other features in view the invention consists of a novel construction, combination and arrangement of parts as will be hereinafter more specifically described and illustrated in the accompanying drawings and specification, but it is to be understood that it is 3 not intended to limit the invention in scope beyond the spirit and terms of the claims hereunto appended.

In the drawings: wherein for the purpose of illustration is shown the preferred embodiments of the invention, wherein like reference characters indicate like parts throughout the several views in which:-

Figure 1 is a side elevation of the pump in ac cordance with the present invention.

Figure 2 is a fragmentary top plan view thereof.

Figure 3 is a fragmentary, enlarged, detailed vertical section through the pump taken substantially on line 33 of Figure 2.

Figure 4 is a top plan View of the reservoir valve casing.

Fig-ure5 is a bottom plan view of the reservoir valve casing.

Figure 6 is a detailed vertical section through the reservoir valve casing.

Figure 7 is a plan view of the bottom of the reservoir valve casing cover.

Figure 8 is a detailed vertical sectional view through one of the pistons taken substantially on line 88 of Figure 3.

Figure 9 is a detailed vertical section through one of the pistons-taken substantially on line 99 of Figure 8.

Figure 10 is a fragmentary detailed section through the cylinder taken substantially on line 10-l0 of Figure 3 showing the communicating passage between the two chambers of the cylinder.

In the drawings 10 indicates generally a rectangular base preferably formed of heavy plate steel. In the base are located twin reservoirs ll, 12 which have a common horizontal bottom wall 13, side walls 14 rising therefrom and these reservoirs are divided centrally by a bridge wall 15 which separates them from each other. The horizontal top wall 16 is secured to the side wall l l of the base by bolts 1'7 and the top wall closes the reservoirs 11, 12.

Each of the reservoirs ll, 12 are similar and have substantially the same capacity. In the top wall 16 there is a relatively large opening for each reservoir. Each opening has a removable lid 18 anchored to the top wall by the bolts 19. In the bottom wall 13 there is a dished cavity 20 for each reservoir near the upper edge of which is a circular ledge 21 that forms a seat for the hollow, cylindrical reservoir valve casing 22. The bottom of each valve casing is supported in spaced relation above the bottom of the cavity 20. From each cavity 20 there is a passage 23 which is connected with the supply conductor pipe 24 through which the water is drawn into the twin reservoirs.

Each valve casing 22 is the same. Inside the hollow valve casing is a compartment 25 into which extends the plural openings 26 in the bottom Wall 2'7. A peripherally flanged cover 28 closes the compartment 25 and is formed with openings 29 which are in alinement with openings 26 in the bottom wall. The lower face of cover 28 has radial ribs 30 between the openings 29. The head 31 of the bolt 32 is countersunk in the bottom 27 and the stem of the bolt extends through openings in the cover and bottom wall across the compartment 25. The hub 33 of a resilient spider 34, preferably formed of spring steel is anchored to cover 28 by the projecting threaded portion of the bolt 32. The free end of the resilient spider 34 bears against the lower face of the lid 18 for each compartment thereby forcibly retaining the reservoir valve casing 22 in its seat, but at the same time permitting movement in a vertical direction.

The stem of the bolt 32 extends through an opening 32' in the disk valve 31 and the disk valve rides on the stem for controlling the openings 26 responsive to the stroke of pistons 44 as will hereafter appear.

The bolt 32 not only retains the spider 34 but holds the cover 28 on the side walls of the reservoir valve casing 22.

In the form illustrated the cylinder C is cast integral with the cover 16 of the reservoirs having depending supporting legs 35 at each end which rise above said cover 16. The cylinder 0 is preferably made of cast iron. To the open ends of the cylinder are bolted the cylinder heads 36 and across the middle of the interior of the cylinder is the bridge wall 37 preferably cast integral with the cylinder. The bridge Wall divides the cylinder into the twin pump chambers 38, 39. The interior of each pump chamber is lined with a brass bushing 40 to provide a noncorrosive wearing surface for the piston. Through each cylinder head 36 there is an opening having packing glands 41 therein and there is an opening through the bridge wall 3'7 surrounded by the bushing 42 all of which are in alinement with each other to form bearings for the single piston rod 43. There is fixed to the piston rod 43, one for each pump chamber the pistons 44 and the pistons are located at points on the piston rod so as to permit a full stroke in either direction. Each of the pistons 44 are formed in the same manner and it is believed that a description of the one will suffice.

Each of the pistons 44 are formed with a round cup 45 having openings 46 in the bottom. A reduced portion 4'7 of the single piston rod extends through an opening in the bottom of the cup and also through an opening in the cap 48. A nut 49 threaded on the piston rod 43 holds the cap on the cup. A ring 50 is mounted on the periphery of the cup 45 in the periphery of which is seated the p ston ring 51 whereby a snug fit is produced between the ring and the cylinder wall. In the piston is a chamber 52 which confines the disk valve 53 that rides on the reduced portion 4'7 of the piston rod 43. On the inner face of the bottom of cup 45 are radial ribs 54 between the openings 46. Plural openings 55 extend through the cap 48 in alinement with openings 46 and are opened or closed by the fluctuation of the disk valve 53.

From each cylinder head 36 there leads a conductor 56 which communicates with the respective reservoirs through openings 5'7 in the lids 18. Thus communication is established from pump chamber 38 to its corresponding reservoir 11 and likewise with the pump chamber 39 and the corresponding reservoir 12.

Between the confronting portions of the pump chambers 38 and 39 there is a circular passage 56. A portion of the bridge wall 3'7 closes the passage as at 5'7 on one end and a removable plate 58 closes said passage at the other end. In the wall 5'7 are openings 59 that are in alinement with openings 60 in the plate 58. The rod 61 extends across the passage 56 and one end is secured in wall 5'7 while the other end is anchored in wall 58. There is a disk valve 62 slidably mounted on the rod within the passage 56 and this disk valve in response to the movement of the pistons closes the respective openings 59 and 60 by sliding from one end to the other in the passage. Leading from the opposite sides of the pump are the discharge ports '75 that communicate with the passage 56.

On the outside of the cylinder C along each side is an elongated extension or rib 80 in the upper face of each of which is a longitudinal bearing channel 63 in each of which is mounted the sliding connecting rod 64. The connecting rods 64 straddle the sides of the cylinder and are connected at each end with cross heads 65. The bearing channel 63 is substantially coextensive with the length of the cylinder and on the upper face each connecting rod is formed with a series of teeth 65. The connecting rods 64 function in the nature of a rack by engaging with teeth 66 on a rocking segment 67 which is journaled as at 68 to the top of the cylinder on the shaft 68. Connected with the rocking segments or segmental pinions are the oppositely disposed handles 69 and '70 which when moved up and down translate movement to the connecting rods 64.

In event it is desired to apply power in the operation of the pump an arm '71 may be connected to one of the cross heads whereupon reciprocating motion may be imparted to the pump. The opposite projecting ends of the piston rod 43 are anchored to the cross heads 65 by the bolts '72. To explain the operation of the pump a beginning is made with the pistons 44 at the end of their strokes to the right. Movement to the left causes piston valve 53 in the right hand piston to close and corresponding valve in the left hand piston to open. At the same time valve 62 in passage 56 moves to the left closing chamber 38 and causing chamber 39 to register with the discharge ports '75 leading from the passage 56. The same movement causes valve 31 in the right hand reservoir valve casing to open thereby drawing in a supply of water. The same movement in the left hand chamber 38 causes the disk valve 53 which works opposite to that shown in Figure 8, to open to permit water to percolate from one side to the other of the piston, while the valve in the reservoir valve casing is closed by gravity in the corresponding reservoir 11. It is believed that the action in the reverse movement will be clearly understood after the foregoing explanation.

Having described our invention, what we claim is:

1. A pump comprising a base formed with a pair of independent reservoirs, a cylinder supported above the base and closed at each end by cylinder heads secured thereto, a bridge wall in the cylinder dividing the cylinder into a pair of chambers each one of which has independent communication with a corresponding one of the pair of reservoirs, a supply pipe connected with both reservoirs, check valves in the reservoirs for controlling the flow from the supply pipe to the reservoirs, a piston rod having bearing supports respectively in each cylinder head and the bridge wall, valved pistons on the piston rod one for each chamber, said bridge wall formed with a discharge passage having a separate communication with each of the chambers, and a doubleacting valve supported in the passage separate from the piston rod for alternately registering rate communication with a corresponding chamber, valve controlled inlets in the reservoirs, and means for operating the piston.

ROBERT E. VENTRESS. JOSEPH C. MULVILL. 

